Coke-oven door



" LOUIS WILPUTTE, OF NEW ROCHELLE, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS TO WILPUTTE COKE OVEN CORPORATION,

Patented Feb. 4, 19'30 UNITED- STATES pnilszlvr osFFieE MAINE OF YORK, N. Y., A CORPORATION OF COKE-OVEN nooi?v Application filed .Tuly 11,

1924. ySerial No. 725,333.

present invention consists in an imsurrounded by the ribs A3, is formed inthree .provement in coke oven doors of the so-called plug type employed for closing the ends of the horizontally elongated coking chambers of modern by-products coke ovens. The general object of the invention is to provide a doorof the kind specified, characterized by itsmechanical simplicity and durability and a by the special provisions made for restricting kvthe door, such radiation of heat being espethelieat radiation from the outer surface of cially objectionable not only because of the heat loss involved, but because it subjects to discomfort and impairs the efciency of the attendants who have to work on the benches or portions of the coke oven structure in front of the door.

The various features of novelty which characterize my invention are pointed out with particularity in the claim annexed to yand forming a part of this specification. For

a better understanding of' the invention, however, and the advantages possessed by it, reference should be had to the accompanying drawings and descriptive matter in which I have illustrated and described a preferred, embodiment 'of the invention.

Of the drawings: c i

n Fig. 1 is an elevation of one form of door; Y Fig. 2 is a section on the line 2 2 of Fig. l;

Fig. 3 is a section on the line 3 3 of Fig. l

Fig. 4`is a view taken similarly to Fig. 2

J showing a modified doorconstruction; and

Fig. 5 is ay section on the line 5 5 of Fig. 4. Y

In the drawings, and referring first to the construction shown in Figs. l, 2, and 3, A represents the cast iron or steel body or frame of the door. The frame part A comprises the usual inner rim or flange A at the inner side of a connecting web A2. The flange A runs all around the margin of the door and l is undercut andserves to hold in place the usual fire brick lining B. At the outer side of the web A2, the door frame part A is provided with outwardly projecting flanges A3 whichvform kthe sides of a heat insulating space. As shown, the heat insulating space sections, they middle section being separated from the upper and lower sections by spaces in which are located the provisions D andE, respectively, for engagement by the door handling machine. Each section of the heat insulating space is closed at its outer side by a corresponding cover plate C which may well be a comparatively thiny plate of metal riveted or bolted to the flanges A2. Preferably, each section of the heat insulating space between the door body web A2 and the corresponding web section C is filled with a light weight material F having high heat insulating properties, which may well be in the form of Sil-o-cel blocks or the like.

In lieu of employing a metallic door body A having a continuous web A2 between the fire brick lining B and outer heat insulating space, I may use the type of door body member AA as shown in Figs. 4 and 5, in which the integral web portion A is largely cut away to reducec'asting strains and the liability of the member AA warping and cracking in service. 'The openings A21 formed in the web A3 by thus cutting away the web are closed by a steel plate A22 riveted to the body part AA at the margin of the opening.

With either form of the invention illustrated, the heat radiation from the outer surface of' the door' is much less than with coke oven doors now in use, and this advantage is obtained without material increase in the weight or cost of construction of the door. The importance of reducing the heat radiation from the coke oven doors to reduce heat waste, Vand to protect the oven attendants will be readily understood when account is taken of the fact that the inner side of such a door is subjected to a temperature which ordinarily is in excess of 2000o F., and that in removing and replacing the door, luting the latter, and in other operations, it is necessary for the oven attendants to work in f'ront of and in close proximity to the doors.

An important and distinguishing characteristic of the invention is the provision of the gas tight wall formed by the integral web A2 of Figs. l and 2, and by the cut away web A2o and cover plate A22 of Figs. 3 and 4,

Y between the fire brick door B lining and the heat insulating space. This not only prevents the leakage of gases into the heat insulating space, but prevents the collection of tar in such space which would otherwise interferewith its heat insnlatingproperties, and in particular would impair the effectiveness of the Sil-o-eel or like packing which I consider practically .essential to .the full realization ,ofithe advantagesof myinvention.

Having now described my invention, what I claim as new and desire to secure:byLetters Patent, is:

A coke oven door comprising a metallic frame formed with a gas tight web portion,

a flrebrick'lining mounted'in said frame at one vside'of said web portion, means cooperating -With 'said web' portion 'to 'form a plurality of spaced closed heatinsulating compartments of low .heat conducting capacity ron the opposite side of said web portion and spaced from each other in adirection parallel to said web portion and means'located on said web portion between said compartments by which said door may be mechanically moved.

Signed atNew York city inthe county of NewYork and vState of New 'York this 9th day of Jlily, A. D. 1924. ci Y LOUIS WILPUTTE. 

